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| COTTICA,Solange Maria; AMADO,Daieni Alves Vieira; AGUIAR,Silvia Cristina de; BOEING,Joana Schuelter; FRANCO,Selma Lucia; ZEOULA,Lucia Maria; VISENTAINER,Jesuí Vergílio. |
| Abstract The presence of PUFA (polyunsaturated fatty acids) in cow milk, including conjugated linoleic acids (CLA) isomers, makes milk susceptible to lipid oxidation, and may lead to the formation of volatile products responsible for a rancid smell. Consequently, including natural antioxidants in the diet of dairy cattle can assist in preventing lipid oxidation. In this study, soybean oil (a source of PUFA) and different ethanolic extracts of Brazilian propolis were included in the cows' feed, and the antioxidant activity and lipid oxidation of the animals' milk was assessed. Antioxidant activity was analyzed using the DPPH method, potassium ferricyanide reduction and chelating ability. Total phenolic compounds and flavonoids were also determined. Lipid... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural additive; Dairy product; Phenolic compounds; Fatty acids; Aldehydes. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000200467 |
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| Saleem,Afia; Bukhari,Syed Majid; Zaidi,Asma; Farooq,Umar; Ali,Majid; Khan,Asma; Khan,Sidra; Shah,Kausar Hussain; Mahmood,Adeem; Khan,Farhan Ahmed. |
| The 4-Hydroxycoumarin derivatives are known to show a broad spectrum of pharmacological applications. In this paper we are reporting the synthesis of a new series of 4-Hydroxycoumarin derivatives synthesized through Knovenegal condensation; they were characterized by using UV-Vis, FT-IR, NMR spectroscopies. The synthesized compounds were evaluated for antibacterial activity against Staphylococcus aureus and Salmonella typhimurium strains. The compounds (2), (3) and (8) showed favorable antibacterial activity with zone of inhibitions 26.5± 0.84, 26.0 ± 0.56 and 26.0 ± 0.26 against Staphylococcus aureus (Gram-positive) respectively. However, the compounds (5) and (9) were found more active with 19.5 ± 0.59 and 19.5 ± 0.32 zone of inhibitions against... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 4-Hydroxycoumarin; Anti-urease; Carbonic anhydrase; Aldehydes; Antibacterial. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100580 |
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| Chopin, Christine; Kone, Matenin; Serot, Thierry. |
| The aim of this study was to assess the modifications of fish myosin induced by interactions with four aldehydes: hexanal, 2-hexenal, 2,4-hexadienal, and 2,6-nonadienal. These compounds are generated during lipid oxidation and are known to have an impact on the functional properties of proteins. The interactions between protein and aldehydes were highlighted by measuring the content of aldehydes in the gaseous phase by the SPME-GC technique. Results show that the partition of aldehydes between the proteinaceous system and the gas phase decreases with time, except for hexanal. This decrease is proportional to the number of carbons and double bonds. The reaction between myosin and unsaturated aldehydes induces a decrease in the free sulfhydryl and amino... |
| Tipo: Text |
Palavras-chave: SPME; Interactions; Aldehydes; Fish myosin. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2676.pdf |
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